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Finding the Fourth Proportional to 18,996.78, 28,464.04 and 6,510.08

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Solution

The fourth proportional to 18,996.78, 28,464.04 and 6,510.08 is: 9,754.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,996.78 : 28,464.04 = 6,510.08 : x
  2. Step 2: Convert to fraction form
    18,996.78/28,464.04 = 6,510.08/x
  3. Step 3: Cross multiply
    18,996.78x = 28,464.04 × 6,510.08
  4. Step 4: Simplify right side
    18,996.78x = 185,303,177.52
  5. Step 5: Solve for x
    x = 185,303,177.52/18,996.78
  6. Step 6: Final answer
    x = 9,754.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.